Complete questions 1, 2 and 3. Please show your work. Plageriasm freeNeed by 9:00 p.m. Friday, September 61. A hospital emergency room averages 50 patients per shift. A shift is 8 hours long, and the average patient requires 20 minutes in the exam room.a. How many exam rooms should the hospital have if it wishes to maintain a 30 percent capacity cushion?b. Discuss whether you think a 30 percent capacity cushion is appropriate for a hospital emergency room. What factors would you consider when setting this cushion?2. A fast-food restaurant averages 150 customers per hour. The average processing time per customer is 90 seconds.a. Determine how many cash registers the restaurant should have if it wishes to maintain a 10 percent capacity cushion.b. Discuss whether you think a 10 percent capacity cushion is appropriate for a fas-food restaurant. What factors would you consider when setting this cushion?3. A university has demand for 10,000 classroom seats per day (one student in one class is a classroom seat). All classrooms have t0 seats, and the day is considered to be 10 hours long for scheduling purposes. Each class takes 1 hour. Determine the number of classrooms required if the university seeks to maintain a 20 percent capacity cushion.